reasons it is important to plug the ARBE-III into a 3 wire AC line or outlet. In addition, the
(B-) terminal of the ARBE-III is capacitively coupled to the aluminum front panel. This
provides an RF by-pass for your radio and effectively provides the ground your radio may
require.
Cautions when using the ARBE-III
The ARBE-III has been designed to provide many years of trouble free operation if used as
intended. Short circuit protection is provided on each separate supply (A, B, C). However,
the short circuit protection is not intended to provide the protection function if one supply
is connected directly across another supply.
Example: the “A” supply connected across the “C” supply.
You would have a similar reaction if you connected a 12 volt car battery across a 6 volt car
battery!!
Connecting any of the supplies across each other could void the 5 year warranty!!
You should always keep in mind that
any
electrical device is potentially dangerous. The
ARBE-III has been designed with safety in mind, however the following precautions
should be observed:
1)
High voltage is present on the “B” supply terminals when the on/off switch is in the
on position and the front panel red neon bulb is illuminated.
2)
Under normal operating conditions, the heat sink on the aluminum front panel will
run hot (to the touch), but not hot enough to burn anyone. If the ARBE-III is
allowed to remain in a shorted state for an extended period of time, the heat sink
could become hot enough to cause a minor burn.
3)
For electrical safety, the aluminum front panel and heat sink are grounded though a
3 wire power cord.
Do not try to defeat the ground.
4)
The ARBE-III is assembled with tamperproof screws. This is for safety reasons.
Inside the ARBE-III, 120 VAC is exposed and is potentially lethal. Do not attempt
to repair it yourself. If you have any problem with the ARBE-III, send it back to
Antique Radios Inc for repair.
5)
Always turn the ARBE-III off when not in use.
6)
Always double check your connections before you turn the power on your radio.
You can verify proper filament voltage by using just “one” tube the first time you
attempt operation. A few extra minutes could save you a valuable set of tubes.
7)
If you are uncertain about the proper connections, GET HELP FIRST!!
Technical assistance is available from Antique Radios Inc.
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